Metal railway-tie.



E. J. PETTEGREW.

METAL RAILWAY TIE.

APPLICATION FILED JULY 15, 1912.

Patented July 8, 19 13.

ERNEST J. PETTEGREW, OF WAYSIDE. NEBRASKA.

METAL RAILWAY-TIE.

Specification of Letters Patent.

Pat entodJ'ulyS, 1913.

Application filed July 15. 1912. Serial No. 709.63

To 7! rv/mm it may concern Be. it known that l. Ennss'r J. Pn'i'rscnnw, a citizen of the United States, residing at \Vavside, in the county of Dawefland State of Nebraska, have invented certain new and useiul Improvements in Metal Railway- Ties; of which the following is a specification.

This invention relates to improvements in metal railway ties, and has for one of its objects to improve the construction and increase the eil'ieiency and utility of devices of this character.

Another object of the invention is to pro- (luce an improved construction 01. tie formed with irregular faces to receive portions of the tamping material to assist in holding the tie from creeping movement under the severe strains to which devices of this character are subjected.

Another object of the invention is to pro vide a simply constructed tie with fastening means for the rails so constructed that any slack which may be produced between the tie and the rail may be taken up without detaching the parts;

Another object of the invention is to provide, a simply constructed tie having means for draining the same.

With these and other objects in view, the invention consists in certain novel features of construction as hereafter shown and described and then specifically pointed out in the claims, and in the drawings illustrative of the preferred embodiment of the invention: Figure 1 is a plan view of a portion of one of the improved ties; Fig. 2 is a side elevation of the part shown in Fig. 1; Fig. 3 is a longitudinal section of the improved tie at one end; Fig. :1 is an end elevation; Fig. 5 is an enlarged perspective view of one of the rail-holding devices.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The improved tie is constructed of metal in tubular form and preferably oblong transversely and is represented as a whole at 10. The tie will be constructed of the usual length of an ordinary railway tie, about eight feet, and ma be of any required 1- 126 transversely, but being of metal may be (instructed of less area transversely than the ordinary wood he as its strength 1s 'grcater. 'lhc ties may however, be constructed of any suitable length and of any suitable size transversely, and it is not desired to limit the invention in this respect.

The improved tie is formed of a tube continuous throughout or without seams longitudinally or transversely and with the top and bottom and side walls corrugated or formed with alternate depressions and ribs indicated at 11 with the body preferably left without the corrugations where the rails are located as indicated at 19. The corrugations will be arranged both externally and internally of the tie body as indicated in Fig. 3,

so that the metal of the walls is of substantially uniform thickness throughout. By thus forming the side walls with the gations or irregular faces recesses are provided for the reception of the tamping material which thus materially assists in hold ing the tie from creeping movement under the severe strains to which devices of this character are subjected. The corrugations likewise provide means for the expansion and contraction of the tie longitudinally under changes of temperature, without danger, of fracturing the material.

The improved tic will be constructed preferably of steel cast in the form shown and described, and may be of any thickness or weight. Formed in the upper face of the tie and extending downwardly into the side walls of the same are slots 13-44, the slots being located at the points where the rails are to engage the tie, the slots are designed to receive fastening devices comprising shanks 15, lower T-shaped terminals 18 and an upper head 16-17, but as this fastening device constitutes the subject-matter of a separate application, filed Dec. 2, 1912, Serial No. 734,563, it is not to further describe the same.

By this means a simply constructed tie is produced which combines all of the advantages of the ordinary railway tic together with the means to eii'ectually resist the creeping action of the tie.

Having thus described the invcnti on, what is claimed as new is:

1. A metallic railway tie formed of a tube continuous hroughout and with corrugations intending entirely around the 23 4110 and with the walls between the out. and .en minal corrugations without the corrugations to receive the rails.

deemed necessary- 2. A metallic railway tie formed oflei port-s for rails and wherebythe walls are tube continuous throughout with the inter-' uniform in thickness throu 'hout. 1Q

mediate portion and the end portions of In testimony whereof I a x my signature itswalls formed with corrugations extend: in preseri'e of two witnesses.

5 ing entirely around the same externally and ERNEST J. PETTEGREW {its} internally, the walls between the end and Witnesses: terminal corrugations being left without JOHN R. FOLEY, corrugations to provide uncorrugated sup- G. F, LONG.

M .Copies of this patent may be obtained for five cents each, by ecldressing the Commissioner of Patents,

Washington, D C.

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